# US 4,398,484 A · Arrangement for installing a nuclear reactor block in a vessel

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- Number: US 4,398,484 A
- Document ID: US4398484A
- Status: Granted
- Kind: A
- Application number: 06/212,055
- Filed: 1980-09-22
- Granted: 1983-08-16
- Earliest claimed: 1979-02-07
- Assignees: Ateliers et Chantiers de Bretagne - A.C.B.
- Inventors: Robert Pierart
- Web page: https://patentgrep.com/patent/US4398484A

## CPC

- B63B 3/04: with permanently-connected sub-units
- B63B 73/10: Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
- B63B 73/20: Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)

## Abstract

The invention relates to a method and an assembly for a equipping vessel propelled by nuclear power. In accordance with the invention, a vessel is made in two prefabricated parts (2,3) and a chamber (5) is provided in the part (2). A nuclear reactor block (6) is placed in said chamber before assembling the two parts. The invention applies to building diverse nuclear powered vessels such as ice-breakers for example.

## Claims

### Claim 1

An assembly for installing a nuclear reactor block in a vessel, said vessel being built in at least two prefabricated parts which are then assembled end to end, one of the parts including a chamber in which said block may be inserted before said parts are assembled by a substantially horizontal translation movement of said block from a barge by rolling or sliding onto a temporary support situated in said chamber, the improvement wherein said assembly includes hoisting means composed of a plurality of guide columns borne by said one part for guiding the block in a vertical translation movement, jacks provided to the tops of said columns, cables for suspending said block, said cables allowing said block to be raised momentarily to remove the temporary support and to be lowered to make it rest in its final position in said chamber.

### Claim 2 (depends on 1)

An assembly according to claim 1, wherein the tops of said columns are integral with a platform which supports the said jacks.

### Claim 3 (depends on 1, 2)

An assembly according to claim 1 or claim 2, wherein said block includes a stand provided with through orifices within which the said columns are inserted.